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Effects of Shortening of Pectoralis Minor Muscle on Muscle Activity of Trapezius and Pectoralis Major Muscles (작은가슴근의 단축이 등세모근과 큰가슴근의 근 활성도에 미치는 영향)

  • Yang, Hoesong;Bae, Sehyeon
    • Journal of The Korean Society of Integrative Medicine
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    • v.1 no.4
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    • pp.85-92
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    • 2013
  • PURPOSE : The purpose of this study was to determine the effects of the length of the pectoralis minor on muscle activity of trapezius and pectoralis major in subjects in subjects with shortened pectoralis minor muscle. METHOD : The subjects was participated in 36 with shortened pectoralis minor muscle. All subjects was examined the length test of pectoralis minor muscle. we divided by 3 groups. group I(n=12) was for 4~5cm of length of pectoralis minor muscle, group II(n=12) was for 5~6cm, group III(n=12) was for above 6cm. The EMG activity of upper trapezius, middle trapezius, lower trapezius and pectoralis major muscle activity was measured by surface EMG while elevationg the right arm in sitting postion with head to the neutral, shoulder elevation $135^{\circ}$ with scaption. Data were analyed using one-way ANOVA with a Tukey post hoc test. RESULT : The EMG activity differed significantly among the three groups(p<.05). The group III had significantly greater EMG activity of upper trapezius and pectoralis major muscles than group I and II(p<.05). Also, The group III had significantly smaller EMG activity of lower trapezius muscle than group I and II(p<.05). But, these was no significant difference in the EMG activity of the middle trapezius muscle among the groups (p.05). CONCLUSION : Therefore, the result of this study should be suggested that the shortened pectoralis minor muscle was affected the EMG activity of the upper trapezius, lower trapezius and pectoralis major. Ultimately the length of the pectoralis minor muscle leads to the muscle imbalance in shoulder girdle.

Effects of Three Exercise Programs on the Length of Pectoralis Minor and Forward Head Posture (3가지의 운동프로그램이 작은가슴근의 길이와 머리전방자세에 미치는 영향)

  • Yang, Hoesong;Jeong, Chanjoo;Yoo, Youngdae;Heo, Jaewon
    • Journal of The Korean Society of Integrative Medicine
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    • v.5 no.3
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    • pp.21-28
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    • 2017
  • Purpose: The purpose of this study was to investigate the effects of three exercise programs on forward head posture. Methods: Ninety-five individuals were recruited to assess the of the pectoralis minor muscle. Of these, 36 individuals with pectoralis minor muscles were selected and randomly divided into three groups: a functional massage group, a stretching group, and a stretching and muscle strengthening group. The exercise program consisted of sessions four times per week for two weeks. The length of pectoralis minor and the activity of the trapezius muscles were measured using electromyography. Forward head posture was assessed using the craniovertebral angle (CVA) and the cranial rotation angle (CRA) pre-, during and post-treatment. Result: Significant improvements were observed in pectoralis minor length, CRA, and CVA post-treatment in all groups (p<0.05, p<0.01, p<0.001). However, only the activity of the lower trapezius demonstrated a statistically significant difference post-treatment. There were no significant differences between the groups. Conclusion: The findings of this study suggest that all three exercise programs were effective in improving forward head posture and the length of pectoralis minor post-treatment.

Study on the Influence of Die Corner Radius for Deep Drawing of Elliptical Product of Automobile (자동차용 타원형 디프 드로잉 제품의 다이 반경에 관한 연구)

  • 허영민;박동환;강성수
    • Transactions of Materials Processing
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    • v.11 no.8
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    • pp.668-675
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    • 2002
  • The circles deform into various shape during deformation, the major and minor axes of which indicate the direction of the major and minor principal strains. Likewise, the measured dimensions are used to determine the major and minor principal strain magnitudes. This circular grid technique of measuring strains can be used to diagnose the causes of necking and fracture in industrial practice and to investigate whether these defects were caused by material property variation, changes in lubrication, of incorrect press settings. In non-axisymmetric deep drawing, three modes of forming regimes are found: draw, stretch, plane strain. The stretch mode for non-axisymmetric deep drawing could be defined when the major and minor strains are positive. The draw mode could be defined when the major strain is positive and minor strain is negative, and plane strain mode could be defined when the major strain is positive and minor strain is zero. Through experiments the draw mode was shown on the wall and flange are one of a drawn cup, while the plane strain and the stretch mode were on the punch head and the punch corner area respectively, We observed that the punch load of elliptical deep drawing was decreased according to increase of die corner radius and the thickness deformation of minor side was more large than major side.

Biological Effects of Vinca minor extract; Tyrosinase inhibition, stimulation of ROS generation and increasement of cell migration activity in keratinocytes

  • Kim, Jun-Sub;Yu, Il-Hwan;Joo, Ji-Hye;Nam, Gyeong Hoe;Jung, Kyung-Hwan;Chung, Young Soo;Lee, Hyang-Yeol
    • Journal of the Korean Applied Science and Technology
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    • v.33 no.4
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    • pp.788-794
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    • 2016
  • Vinca alkaloids from plant Vinca minor have been investigated for their effects of tyrosinase inhibition, stimulation of ROS generation and increasement of cell migration activity. The methanolic crude extract and the water-soluble fraction exhibited $IC_{50}$ value of 3.1 mg/mL and 2.1 mg/mL. Vinca minor extract treatment significantly increased ROS levels in HaCaT cells, in a concentration-dependent manner. Treatments of Vinca minor extract led to increase wound closure when compared with non-treatment. Low dose (0.1% or 0.3%) of extracts have not significantly affected, compared with that in controls. By contrast, 0.5% extract have dramatic effect on wound healing activity of keratinocytes. Effects of Vinca minor extract in a filter-based cell mobility assay appear similar to that of wound closure assay, which suggests that the Vinca minor extract have wound healing effects on skin.

Molecular Identification and Morphological Description of Gymnothorax minor (Muraenidae, Anguilliformes) Leptocephali off Jeju Island (제주 근해에서 채집된 나망곰치, Gymnothorax minor (뱀장어목, 곰치과) 엽상자어의 분자동정 및 형태기재)

  • Lee, Seung-Jong;Ji, Hwan-Sung;Kim, Jin-Koo
    • Korean Journal of Ichthyology
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    • v.25 no.2
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    • pp.59-64
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    • 2013
  • Two leptocephali (36.2~69.2 mm in total length) of the family Muraenidae were collected off Jeju Island, Korea. They were identified using 742 base pairs of mitochondrial DNA 12S rRNA sequences, and their morphological description were presented. The two leptocephali were identified to Gymnothorax minor based on genetic distance (d=0.000), being well consistent with that of G. minor adult collected off Tongyeong. Gymnothorax minor leptocephali are characterized by morphological combinations: total myomeres 137~139, predorsal myomeres 32, preanal myomeres 82~86, body depth in total length more than 10%.

An fMRI Study on the Differences in the Brain Regions Activated by an Identical Audio-Visual Clip Using Major and Minor Key Arrangements (동일한 영상자극을 이용한 장조음악과 단조음악에 의해 유발된 뇌 활성화의 차이 : fMRI 연구)

  • Lee, Chang-Kyu;Eum, Young-Ji;Kim, Yeon-Kyu;Watanuki, Shigeki;Sohn, Jin-Hun
    • Proceedings of the Korean Society for Emotion and Sensibility Conference
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    • 2009.05a
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    • pp.109-112
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    • 2009
  • The purpose of this study was to examine the differences in the brain activation evoked by music arranged in major and minor key used with an identical motion film during the fMRI testing. A part of the audio-visual combinations composed by Iwamiya and Sano were used for the study stimuli. This audio- visual clip was originally developed by combining a small motion segment of the animation "The Snowman" and music arranged in both major and minor key from the original jazz music "Avalon" rewritten in a classical style. Twenty-seven Japanese male graduate and undergraduate students participated in the study. Brain regions more activated by the major key than the minor key when presented with the identical motion film were the left cerebellum, the right fusiform gyrus, the right superior occipital, the left superior orbito frontal, the right pallidum, the left precuneus, and the bilateral thalamus. On the other hand, brain regions more activated by the minor key than the major key when presented with the identical motion film were the right medial frontal, the left inferior orbito frontal, the bilateral superior parietal, the left postcentral, and the right precuneus. The study showed a difference in brain regions activated between the two different stimulus (i.e., major key and minor key) controlling for the visual aspect of the experiment. These findings imply that our brain systematically generates differently in the way it processes music written in major and minor key(Supported by the User Science Institute of Kyushu University, Japan and the Korea Science and Engineering Foundation).

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Microbial conversion of major ginsenosides in ginseng total saponins by Platycodon grandiflorum endophytes

  • Cui, Lei;Wu, Song-quan;Zhao, Cheng-ai;Yin, Cheng-ri
    • Journal of Ginseng Research
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    • v.40 no.4
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    • pp.366-374
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    • 2016
  • Background: In this study, we screened and identified an endophyte JG09 having strong biocatalytic activity for ginsenosides from Platycodon grandiflorum, converted ginseng total saponins and ginsenoside monomers, determined the source of minor ginsenosides and the transformation pathways, and calculated the maximum production of minor ginsenosides for the conversion of ginsenoside Rb1 to assess the transformation activity of endophyte JG09. Methods: The transformation of ginseng total saponins and ginsenoside monomers Rb1, Rb2, Rc, Rd, Rg1 into minor ginsenosides F2, C-K and Rh1 using endophyte JG09 isolated by an organizational separation method and Esculin-R2A agar assay, as well as the identification of transformed products via TLC and HPLC, were evaluated. Endophyte JG09 was identified through DNA sequencing and phylogenetic analysis. Results: A total of 32 ${\beta}$-glucosidase-producing endophytes were screened out among the isolated 69 endophytes from P. grandiflorum. An endophyte bacteria JG09 identified as Luteibacter sp. effectively converted protopanaxadiol-type ginsenosides Rb1, Rb2, Rc, Rd into minor ginsenosides F2 and C-K, and converted protopanaxatriol-type ginsenoside Rg1 into minor ginsenoside Rh1. The transformation pathways of major ginsenosides by endophyte JG09 were as follows: $Rb1{\rightarrow}Rd{\rightarrow}F2{\rightarrow}C-K$; $Rb2{\rightarrow}C-O{\rightarrow}C-Y{\rightarrow}C-K$; $Rc{\rightarrow}C-Mc1{\rightarrow}C-Mc{\rightarrow}C-K$; $Rg1{\rightarrow}Rh1$. The maximum production rate of ginsenosides F2 and C-K reached 94.53% and 66.34%, respectively. Conclusion: This is the first report about conversion of major ginsenosides into minor ginsenosides by fermentation with P. grandiflorum endophytes. The results of the study indicate endophyte JG09 would be a potential microbial source for obtaining minor ginsenosides.

Psychiatric Characteristics of Adolescents with Minor Offenses and Follow-Up after a 6-Month Protective Disposition (1, 2호 보호 처분 청소년의 정신의학적 특성 및 6개월 보호처분 후 추적조사)

  • Chung, Un-Sun;Seo, Sang-Soo;Lee, Seung-Jae;Jeong, Sung-Hoon
    • Journal of the Korean Academy of Child and Adolescent Psychiatry
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    • v.21 no.2
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    • pp.95-102
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    • 2010
  • Objectives : This study investigated the differences between the psychiatric characteristics of minor juvenile offenders and normal adolescents as well as differences in psychiatric symptoms after a six month protective disposition. Further, the current study aimed at determining psychiatric screening methods for evaluating delinquent adolescents. Methods : The Latent Delinquency Questionnaire (LDQ), the Revised Children's Manifest Anxiety Scale (RCMAS), the Children’s Depression Inventory (CDI), the Reynolds Suicidal Ideation Questionnaire (SIQ), the Piers-Harris Children's Self Concept Inventory (SCI), and the Korean Youth Self Report (K-YSR) were administered to 134 normal adolescents (114 males) and 109 minor offenders (97 males) aged 12 to 16 years. After six months, 46 offenders (all males) completed the RCMAS, CDI, SIQ, and SCI again. Results : Adolescents with minor offenses had more delinquent, aggressive behavior and externalizing behavior problems, but were significantly less depressive, anxious, or suicidal than normal controls. Further, recidivists had more anxiety, depression, and delinquent behavior than non-recidivists. Minor offenders reported that their anxiety and depressive mood decreased after six months of protective disposition. Conclusion : Adolescents with minor offenses had more delinquent, aggressive behavior and externalizing behavior problems suggesting that psychiatric screening tools for minor offenders should measure disruptive behavior disorder.

The Complaints Rates of Minor Discomforts and Its Influencing Factors. (임신중 경증불편감 호소율과 영향 요인에 관한 연구)

  • Lee, Mi-La;Cho, Cheong-Ho;Kim, Eun-Kyung;Song, Mi-Seung
    • 모자간호학회지
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    • v.1
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    • pp.16-22
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    • 1991
  • Various minor discomforts are reported to be complained by the pregnant women. but what were and how much were they complained has not been revealed until recently. So, These lack of knowledge have given nurses difficulties in planning of care to promote the health during the pregnancy. Objectives of this study were to identify the rate of complaints in each minor discomforts and to explore the influencing factor on reduction of complaints of minor discomforts. The subjects were 120 mothers, who delivered their babies in hospital, from September to December 1990 and the reason why the postpartum mothers were selected as the subjects were minor discomforts could develope during the entire period of pregnancy. Data were gathered by the questionnares and analized statistically using SAS and SPSS program. Results were as follows. 1. More than one third of the subjects complained frequent urination, fatigue, increase of the vaginal discharge, morning sickness, the increased urination at night, pain in leg, backache, edema in leg, constipation, dyspnea, varicose vein, flatulence, headache. 2. Minor discomforts complained to be severe in more than one third of the subjects were frequent urination and increased urination at night. 3. The influencing factor to reduce the complaints of minor discomfort was revealed to be the perceived family support (r=0.030431, t=0.0007). We suggest that nurses should emphasize the importance of the family support to the pregnant women and their family, and to explore the relationships among the locus of control, the perceived family support and the complaints of minor discomforts.

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Arthroscopic Treatment of Isolated Teres Minor Tendon Tear: A Case Report

  • Lee, Se-Won;Park, Sang-Eun;Park, Min-Gyu;Ji, Jong-Hun
    • Clinics in Shoulder and Elbow
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    • v.18 no.3
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    • pp.159-161
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    • 2015
  • Arthroscopic repair of an isolated teres minor tendon tear without associated shoulder joint pathology has not been reported in the literature. We report on a case of isolated teres minor tendon tear after trauma. The patient complained of severe shoulder pain and progressive limited range of motion 4 months after the injury. Magnetic resonance imaging showed a full-thickness tear of the teres minor tendon at its musculotendinous junction and arthroscopic repair was performed. At 2 years follow-up, satisfactory clinical and radiological outcomes were observed with return to pre-injury level. Here, the authors report this case and provide a review of literature.